A new type of automobile headlight positive and negative reversing circuit
By using a combination of MOSFETs in the automotive headlight power commutation circuit, the problem of diode overheating was solved, resulting in more efficient energy utilization and circuit stability.
CN224305675UActive Publication Date: 2026-05-29HONGHE XENON ELECTRONIC TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HONGHE XENON ELECTRONIC TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
In traditional automotive headlight power commutation circuits, diodes generate significant heat under high current conditions, resulting in high power loss, low efficiency, and potential safety hazards.
Method used
By employing different conduction combinations of multiple MOSFETs, the circuit connection is automatically switched according to the positive and negative polarity of the input power supply, realizing the positive and negative reversal function and replacing the traditional diode structure.
Benefits of technology
It effectively reduces energy loss caused by heat generation, improves the stability and reliability of the circuit, and increases the efficiency of electrical energy utilization.
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Smart Images
Figure CN224305675U_ABST
Abstract
The utility model relates to a novel automobile headlamp positive and negative polarity reversing circuit belongs to the automobile headlamp circuit technical field. Including boost circuit and three parallel shunt, each branch all includes first voltage comparator, second voltage comparator, first MOS pipe, second MOS pipe, first resistance, second resistance, third resistance, fourth resistance, first diode, second diode, third diode and first capacitor. The utility model discloses through the different conduction combination of multiple MOS pipes, according to the positive and negative pole situation of input power, automatic switching circuit connection, realizes positive and negative polarity reversing function. Reduce the energy loss caused by heating to improve the overall output efficiency of circuit, make electric energy be able to be utilized more effectively.
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